*Please note: HDX and HDS10X speakers come with a 3.5mm connector and NOT a USB Type-C connector. The 3.5mm Adaptor (part #: 111044) is needed to work with Motion 4 Lite, Motion 6, and Motion Infinity models). For music lovers who demand only the best, HDX and HDS10X speakers are powerful with coated drivers that are tuned to deliver true fidelity and tight powerful bass. You don't buy HDX to fit your helmet, you buy your helmet to fit HDX- that's how good they are. For the best performance, use with UCLEAR Bluetooth controllers with CLEARLink mobile app and graphic EQ (best settings for graphic EQ are “6” for treble, “9” for mids, and “6” for bass).